package cn.xshi.iot.common.fins.core.util;

import java.nio.ByteBuffer;

public class ByteBufferUtils {
	
	public static short getUnsignedByte(ByteBuffer bb) {
		return ((short) (bb.get() & 0xff));
	}

	public static void putUnsignedByte(ByteBuffer bb, int value) {
		bb.put((byte) (value & 0xff));
	}

	public static short getUnsignedByte(ByteBuffer bb, int position) {
		return ((short) (bb.get(position) & (short) 0xff));
	}

	public static void putUnsignedByte(ByteBuffer bb, int position, int value) {
		bb.put(position, (byte) (value & 0xff));
	}

	// ---------------------------------------------------------------

	public static int getUnsignedShort(ByteBuffer bb) {
		return (bb.getShort() & 0xffff);
	}

	public static void putUnsignedShort(ByteBuffer bb, int value) {
		bb.putShort((short) (value & 0xffff));
	}

	public static int getUnsignedShort(ByteBuffer bb, int position) {
		return (bb.getShort(position) & 0xffff);
	}

	public static void putUnsignedShort(ByteBuffer bb, int position, int value) {
		bb.putShort(position, (short) (value & 0xffff));
	}

	// ---------------------------------------------------------------

	public static long getUnsignedInt(ByteBuffer bb) {
		return ((long) bb.getInt() & 0xffffffffL);
	}

	public static void putUnsignedInt(ByteBuffer bb, long value) {
		bb.putInt((int) (value & 0xffffffffL));
	}

	public static long getUnsignedInt(ByteBuffer bb, int position) {
		return ((long) bb.getInt(position) & 0xffffffffL);
	}

	public static void putUnsignedInt(ByteBuffer bb, int position, long value) {
		bb.putInt(position, (int) (value & 0xffffffffL));
	}
}
